7. A student measures the mass and volume of a piece of copper in the laboratory and uses his data to calculate the density o the metal. According to his results, the copper has a density of 8.37 g/cm3. Curious about the accuracy of his results, the student consults a reference table and finds that the accepted value for the density of copper is 8.92 g/cm3. What would be the student's percent of error? Round to the nearest tenth.
A. 5.7%
B. 6.2%
C. 0.6%
D. 7.1%

Question

7. A student measures the mass and volume of a piece of copper in the laboratory and uses his data to calculate the density o the metal. According to his results, the copper has a density of 8.37 g/cm3. Curious about the accuracy of his results, the student consults a reference table and finds that the accepted value for the density of copper is 8.92 g/cm3. What would be the student's percent of error? Round to the nearest tenth.
A. 		5.7%
B. 		6.2%
C. 		0.6%
D. 		7.1%